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CVE-2026-20059— Cisco Unity Connection Reflected Cross-Site Scripting Vulnerability

CVSS 6.1 · Medium EPSS 0.04% · P13
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I. Basic Information for CVE-2026-20059

Vulnerability Information
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Vulnerability Title
Cisco Unity Connection Reflected Cross-Site Scripting Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability in the web-based management interface of Cisco Unity Connection could allow an unauthenticated, remote attacker to conduct a reflected XSS attack against a user of the interface. This vulnerability exists because the web-based management interface does not properly validate user-supplied input. An attacker could exploit this vulnerability by persuading a user to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cisco Unity Connection（UC） 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Unity Connection（UC）是美国思科（Cisco）公司的一套语音留言平台。该平台可利用语音命令，以免提方式拨打电话或收听留言。 Cisco Unity Connection存在安全漏洞，该漏洞源于基于Web的管理界面输入验证不当，可能导致未经验证的远程攻击者执行反射型跨站脚本攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
CiscoCisco Unity Connection 14 -

II. Public POCs for CVE-2026-20059

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III. Intelligence Information for CVE-2026-20059

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Same Patch Batch · Cisco · 2026-04-15 · 15 CVEs total

CVE-2026-201809.9 CRITICALCisco Identity Services Engine Multiple Remote Code Execution Vulnerability
CVE-2026-201869.9 CRITICALCisco Identity Services Engine Multiple Authenticated Remote Code Execution Vulnerability
CVE-2026-201479.9 CRITICALCisco Identity Services Engine Remote Code Execution Vulnerability
CVE-2026-201849.8 CRITICALCisco Webex Meetings Certificate Validation Vulnerability
CVE-2026-200816.5 MEDIUMCisco Unity Connection Arbitrary File Download Vulnerability
CVE-2026-200786.5 MEDIUMCisco Unity Connection Arbitrary File Download Vulnerability
CVE-2026-201706.1 MEDIUMCisco Webex Contact Center 安全漏洞
CVE-2026-201366.0 MEDIUMCisco Identity Services Engine Authenticated Privilege Escalation Vulnerability
CVE-2026-201615.5 MEDIUMCisco ThousandEyes Enterprise Agent Arbitrary File Overwrite Vulnerability
CVE-2026-201525.3 MEDIUMCisco Secure Web Appliance Authentication Service Traffic Bypass Vulnerability
CVE-2026-201484.9 MEDIUMCisco Identity Services Engine Path Traversal Vulnerability
CVE-2026-201324.8 MEDIUMCisco Identity Services Engine Multiple Cross-Site Scripting Vulnerabilities
CVE-2026-200604.7 MEDIUMCisco Unity Connection Open Redirect Vulnerability
CVE-2026-200614.3 MEDIUMCisco Unity Connection SQL Injection Vulnerability

IV. Related Vulnerabilities

Same product: Cisco Unity Connection
Same vendor: Cisco
Same weakness: CWE-79

V. Comments for CVE-2026-20059

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